Mechanical properties of WN43 magnesium alloy prepared by spark plasma sintering

0525522 - ÚJF 2021 RIV CZ eng C - Conference Paper (international conference)
Knapek, Michal - Minárik, P. - Greš, A. - Zemková, M. - Cinert, Jakub - Král, R.
Mechanical properties of WN43 magnesium alloy prepared by spark plasma sintering.
METAL 2019 - 28th International Conference on Metallurgy and Materials, Conference Proceedings. Ostrava: TANGER Ltd., 2019, s. 1535-1540. Roč. 1. ISBN 978-80-87294-92-5.
[Metal 2019 - 28th International Conference on Metallurgy and Materials. Brno (CZ), 22.05.2019-24.05.2019]
R&D Projects: GA MŠMT EF16_013/0001794
Institutional support: RVO:61389021 ; RVO:61389005
Keywords : spark plasma sintering * magnesium * deformation * twinning * acoustic emission
OECD category: Materials engineering; Materials engineering (UFP-V)

The spark plasma sintering (SPS) method was used to prepare bulk materials form WN43 magnesium alloy atomized powder. Compression tests were carried out in order to investigate the effect of different sintering regimes (10 min at 400, 450, or 500 degrees C) on the mechanical properties of the material. Furthermore, complementary in-situ acoustic emission (AE) recording was employed to reveal the dynamics of deformation processes during compression. It was shown that by increasing the sintering temperature, the ultimate compressive strength and ductility were significantly improved. The AE data and microstructure observations suggest that pronounced twin nucleation takes place around the yield point whereas twin growth and dislocation activity are the dominant deformation mechanisms in the later stages of deformation.
Permanent Link: http://hdl.handle.net/11104/0309636